Heating and Air Conditioning: Technical Service Bulletins

• Customer Interest
  • A/C - Noise From Evaporator Housing
• By Symptom
  • Customer Interest
    • A/C - Noise From Evaporator Housing
  • Inoperative
    • Additional Heater Fans - Repairing
  • Leaks
    • A/C - Leakage Survey
      • Overview
      • 924S
      • 944, 944S, 944 Turbo
      • 911 Carrera
      • 928 S4
  • Noise
    • A/C - Noise From Evaporator Housing
• All Technical Service Bulletins
  • A/C - Refrigerant 134a Use
  • A/C - Retrofitting R12 Systems to R134
    • Overview
    • Procedures
  • A/C Refrigerant - Identifier
  • A/C - Substitutes for R-12 Refrigerant
  • A/C Refrigerant - General Recovery & Recycling Tips
  • A/C - Noise From Evaporator Housing
  • A/C - Revised Sealing Rings for Expansion Valves
  • Additional Heater Fans - Repairing
  • Rear Window Wiper - Installation Update
  • Rear Heater Fan - Modified
  • A/C - Leakage Survey
    • Overview
    • 924S
    • 944, 944S, 944 Turbo
    • 911 Carrera
    • 928 S4
  • A/C - Capacities Update
  • Tools - A/C Compressor Repairs
  • A/C Compressor - Survey
  • Tools - Compressor Seal Replacement
  • Heater Fans - Additional Units Use 10 Amp Fuses
  • A/C - Use of Correct Refrigerant
  • A/C - Refrigerent Oil Volume Capacities